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Sequence
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Model

YSEALANCK

   
   
Control
  • Standard Options
  • C
    Tamper Resistant - Factory Set
  • K
    Handknob
  • L
    Standard Screw Adjustment
  • W
    Hex Wrench Adjustment
  • Y
    Tri-Grip Handknob
  • Additional Options
  • F
    Hex Head Screw with Locknut
  • J
    Capped Screw Adjustment
  • M
    Capped Screw Adjustment with Lockwire Holes
  • O
    Handknob with Panel Mount
  • Q
    Capped and Lockwired
Adjustment Range
  • Standard Options
  • A
    100 - 3000 psi (7 - 210 bar), 1000 psi (70 bar) Standard Setting
  • B
    50 - 1500 psi (3,5 - 105 bar), 1000 psi (70 bar) Standard Setting
  • C
    150 - 6000 psi (10,5 - 420 bar), 1000 psi (70 bar) Standard Setting
  • D
    25 - 800 psi (1,7 - 55 bar), 400 psi (28 bar) Standard Setting
  • E
    25 - 400 psi (1,7 - 28 bar), 200 psi (14 bar) Standard Setting
  • N
    60 - 800 psi (4 - 55 bar), 400 psi (28 bar) Standard Setting
  • Q
    60 - 400 psi (4 - 28 bar), 200 psi (14 bar) Standard Setting
  • W
    150 - 4500 psi (10,5 - 315 bar), 1000 psi (70 bar) Standard Setting
  • Additional Options
  • P
    40 - 400 psi (2,8 - 28 bar), 200 psi (14 bar) Standard Setting
Seal Material
  • Standard Options
  • N
    Buna-N
  • V
    Viton
Range Letter(s) of Subordinate Cartridge
  • Standard Options
  • A
    4 psi (0,3 bar) (with RSFC primary cartridge, Pilot-operated, balanced piston sequence valve)
  • B
    15 psi (1 bar) (with RSFC primary cartridge, Pilot-operated, balanced piston sequence valve)
  • C
    30 psi (2 bar) (with RSFC primary cartridge, Pilot-operated, balanced piston sequence valve)
  • D
    50 psi (3,5 bar) (with RSFC primary cartridge, Pilot-operated, balanced piston sequence valve)
  • E
    75 psi (5 bar) (with RSFC primary cartridge, Pilot-operated, balanced piston sequence valve)
  • F
    100 psi (7 bar) (with RSFC primary cartridge, Pilot-operated, balanced piston sequence valve)
  • Z
    1 psi (0,07 bar) (with RSFC primary cartridge, Pilot-operated, balanced piston sequence valve)
  • A
    4 psi (0,3 bar) (with RSFC8 primary cartridge, Pilot-operated, balanced piston sequence main stage with integral T-8A control cavity)
  • B
    15 psi (1 bar) (with RSFC8 primary cartridge, Pilot-operated, balanced piston sequence main stage with integral T-8A control cavity)
  • C
    30 psi (2 bar) (with RSFC8 primary cartridge, Pilot-operated, balanced piston sequence main stage with integral T-8A control cavity)
  • D
    50 psi (3,5 bar) (with RSFC8 primary cartridge, Pilot-operated, balanced piston sequence main stage with integral T-8A control cavity)
  • E
    75 psi (5 bar) (with RSFC8 primary cartridge, Pilot-operated, balanced piston sequence main stage with integral T-8A control cavity)
  • F
    100 psi (7 bar) (with RSFC8 primary cartridge, Pilot-operated, balanced piston sequence main stage with integral T-8A control cavity)
  • Z
    1 psi (0,07 bar) (with RSFC8 primary cartridge, Pilot-operated, balanced piston sequence main stage with integral T-8A control cavity)
Port and Material Designation
  • Standard Options
  • A
    Ports 1 & 2 — 1/4" NPTF; Port 3 — 1/4" NPTF; Aluminum
  • A/S
    Ports 1 & 2 — 1/4" NPTF; Port 3 — 1/4" NPTF; Iron
  • B
    Ports 1 & 2 — 3/8" NPTF; Port 3 — 1/4" NPTF; Aluminum
  • B/S
    Ports 1 & 2 — 3/8" NPTF; Port 3 — 1/4" NPTF; Iron
  • C
    Ports 1 & 2 — 1/2" NPTF; Port 3 — 1/4" NPTF; Aluminum
  • C/S
    Ports 1 & 2 — 1/2" NPTF; Port 3 — 1/4" NPTF; Iron
  • D
    Ports 1 & 2 — 3/4" NPTF; Port 3 — 1/4" NPTF; Aluminum
  • D/S
    Ports 1 & 2 — 3/4" NPTF; Port 3 — 1/4" NPTF; Iron
  • I
    Ports 1 & 2 — SAE 6; Port 3 — SAE 6; Aluminum
  • I/S
    Ports 1 & 2 — SAE 6; Port 3 — SAE 6; Iron
  • J
    Ports 1 & 2 — SAE 8; Port 3 — SAE 6; Aluminum
  • J/S
    Ports 1 & 2 — SAE 8; Port 3 — SAE 6; Iron
  • K
    Ports 1 & 2 — SAE 10; Port 3 — SAE 6; Aluminum
  • K/S
    Ports 1 & 2 — SAE 10; Port 3 — SAE 6; Iron
  • U
    Ports 1 & 2 — 3/8" BSPP; Port 3 — 1/4" BSPP; Aluminum
  • U/S
    Ports 1 & 2 — 3/8" BSPP; Port 3 — 1/4" BSPP; Iron
  • V
    Ports 1 & 2 — 1/2" BSPP; Port 3 — 1/4" BSPP; Aluminum
  • V/S
    Ports 1 & 2 — 1/2" BSPP; Port 3 — 1/4" BSPP; Iron
  • W
    Ports 1 & 2 — 3/4" BSPP; Port 3 — 1/4" BSPP; Aluminum
  • W/S
    Ports 1 & 2 — 3/4" BSPP; Port 3 — 1/4" BSPP; Iron
Model: YSEA

Pilot-operated, balanced piston sequence assembly with reverse flow check

Capacity:

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Model

YSEALANCK

   
   
Control
  • Standard Options
  • C
    Tamper Resistant - Factory Set
  • K
    Handknob
  • L
    Standard Screw Adjustment
  • W
    Hex Wrench Adjustment
  • Y
    Tri-Grip Handknob
  • Additional Options
  • F
    Hex Head Screw with Locknut
  • J
    Capped Screw Adjustment
  • M
    Capped Screw Adjustment with Lockwire Holes
  • O
    Handknob with Panel Mount
  • Q
    Capped and Lockwired
Adjustment Range
  • Standard Options
  • A
    100 - 3000 psi (7 - 210 bar), 1000 psi (70 bar) Standard Setting
  • B
    50 - 1500 psi (3,5 - 105 bar), 1000 psi (70 bar) Standard Setting
  • C
    150 - 6000 psi (10,5 - 420 bar), 1000 psi (70 bar) Standard Setting
  • D
    25 - 800 psi (1,7 - 55 bar), 400 psi (28 bar) Standard Setting
  • E
    25 - 400 psi (1,7 - 28 bar), 200 psi (14 bar) Standard Setting
  • N
    60 - 800 psi (4 - 55 bar), 400 psi (28 bar) Standard Setting
  • Q
    60 - 400 psi (4 - 28 bar), 200 psi (14 bar) Standard Setting
  • W
    150 - 4500 psi (10,5 - 315 bar), 1000 psi (70 bar) Standard Setting
  • Additional Options
  • P
    40 - 400 psi (2,8 - 28 bar), 200 psi (14 bar) Standard Setting
Seal Material
  • Standard Options
  • N
    Buna-N
  • V
    Viton
Range Letter(s) of Subordinate Cartridge
  • Standard Options
  • A
    4 psi (0,3 bar) (with RSFC primary cartridge, Pilot-operated, balanced piston sequence valve)
  • B
    15 psi (1 bar) (with RSFC primary cartridge, Pilot-operated, balanced piston sequence valve)
  • C
    30 psi (2 bar) (with RSFC primary cartridge, Pilot-operated, balanced piston sequence valve)
  • D
    50 psi (3,5 bar) (with RSFC primary cartridge, Pilot-operated, balanced piston sequence valve)
  • E
    75 psi (5 bar) (with RSFC primary cartridge, Pilot-operated, balanced piston sequence valve)
  • F
    100 psi (7 bar) (with RSFC primary cartridge, Pilot-operated, balanced piston sequence valve)
  • Z
    1 psi (0,07 bar) (with RSFC primary cartridge, Pilot-operated, balanced piston sequence valve)
  • A
    4 psi (0,3 bar) (with RSFC8 primary cartridge, Pilot-operated, balanced piston sequence main stage with integral T-8A control cavity)
  • B
    15 psi (1 bar) (with RSFC8 primary cartridge, Pilot-operated, balanced piston sequence main stage with integral T-8A control cavity)
  • C
    30 psi (2 bar) (with RSFC8 primary cartridge, Pilot-operated, balanced piston sequence main stage with integral T-8A control cavity)
  • D
    50 psi (3,5 bar) (with RSFC8 primary cartridge, Pilot-operated, balanced piston sequence main stage with integral T-8A control cavity)
  • E
    75 psi (5 bar) (with RSFC8 primary cartridge, Pilot-operated, balanced piston sequence main stage with integral T-8A control cavity)
  • F
    100 psi (7 bar) (with RSFC8 primary cartridge, Pilot-operated, balanced piston sequence main stage with integral T-8A control cavity)
  • Z
    1 psi (0,07 bar) (with RSFC8 primary cartridge, Pilot-operated, balanced piston sequence main stage with integral T-8A control cavity)
Port and Material Designation
  • Standard Options
  • A
    Ports 1 & 2 — 1/4" NPTF; Port 3 — 1/4" NPTF; Aluminum
  • A/S
    Ports 1 & 2 — 1/4" NPTF; Port 3 — 1/4" NPTF; Iron
  • B
    Ports 1 & 2 — 3/8" NPTF; Port 3 — 1/4" NPTF; Aluminum
  • B/S
    Ports 1 & 2 — 3/8" NPTF; Port 3 — 1/4" NPTF; Iron
  • C
    Ports 1 & 2 — 1/2" NPTF; Port 3 — 1/4" NPTF; Aluminum
  • C/S
    Ports 1 & 2 — 1/2" NPTF; Port 3 — 1/4" NPTF; Iron
  • D
    Ports 1 & 2 — 3/4" NPTF; Port 3 — 1/4" NPTF; Aluminum
  • D/S
    Ports 1 & 2 — 3/4" NPTF; Port 3 — 1/4" NPTF; Iron
  • I
    Ports 1 & 2 — SAE 6; Port 3 — SAE 6; Aluminum
  • I/S
    Ports 1 & 2 — SAE 6; Port 3 — SAE 6; Iron
  • J
    Ports 1 & 2 — SAE 8; Port 3 — SAE 6; Aluminum
  • J/S
    Ports 1 & 2 — SAE 8; Port 3 — SAE 6; Iron
  • K
    Ports 1 & 2 — SAE 10; Port 3 — SAE 6; Aluminum
  • K/S
    Ports 1 & 2 — SAE 10; Port 3 — SAE 6; Iron
  • U
    Ports 1 & 2 — 3/8" BSPP; Port 3 — 1/4" BSPP; Aluminum
  • U/S
    Ports 1 & 2 — 3/8" BSPP; Port 3 — 1/4" BSPP; Iron
  • V
    Ports 1 & 2 — 1/2" BSPP; Port 3 — 1/4" BSPP; Aluminum
  • V/S
    Ports 1 & 2 — 1/2" BSPP; Port 3 — 1/4" BSPP; Iron
  • W
    Ports 1 & 2 — 3/4" BSPP; Port 3 — 1/4" BSPP; Aluminum
  • W/S
    Ports 1 & 2 — 3/4" BSPP; Port 3 — 1/4" BSPP; Iron
Function
Function image

Technical specifications

  • Modifiers
    Ports
    • A, A/S
      Ports 1 & 2: 1/4" NPTF; Port 3: 1/4" NPTF;
    • B, B/S
      Ports 1 & 2: 3/8" NPTF; Port 3: 1/4" NPTF;
    • C, C/S
      Ports 1 & 2: 1/2" NPTF; Port 3: 1/4" NPTF;
    • D, D/S
      Ports 1 & 2: 3/4" NPTF; Port 3: 1/4" NPTF;
    • I, I/S
      Ports 1 & 2: SAE 6; Port 3: SAE 6;
    • J, J/S
      Ports 1 & 2: SAE 8; Port 3: SAE 6;
    • K, K/S
      Ports 1 & 2: SAE 10; Port 3: SAE 6;
    • U, U/S
      Ports 1 & 2: 3/8" BSPP; Port 3: 1/4" BSPP;
    • V, V/S
      Ports 1 & 2: 1/2" BSPP; Port 3: 1/4" BSPP;
    • W, W/S
      Ports 1 & 2: 3/4" BSPP; Port 3: 1/4" BSPP;
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    Pilot-operated, balanced piston sequence valves will supply a secondary circuit with flow once the pressure at the inlet (port 1) has exceeded the valve setting. The pressure setting of a sequence valve controls the pressure at port 1 relative to the pressure at the drain (port 3). These valves are insensitive to back pressure at port 2 (sequence), up to the valve setting. They may be used to regulate pressure in place of 2-port relief valves if there is pressure in the return line. Additionally, these assemblies incorporate an integral check valve to provide reverse free flow from port 2 (sequence) to port 1 (inlet).

    • All 3 port sequence cartridges are physically and functionally interchangeable (i.e. same flow path, same cavity for a given frame size).
    • Pilot flow continues to increase as the pressure at port 1 (inlet), relative to the pressure at port 3 (drain), rises above the valve setting.
    • Pressure at port 3 is directly additive to the valve setting at a 1:1 ratio and should not exceed 5000 psi (350 bar).
    • Not suitable for use in load holding applications due to spool leakage.
    • Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations.
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    • Body Type
      Line mount
    • Capacity
      30 gpm
    • Mounting Hole Diameter
      .28 in.
    • Mounting Hole Depth
      Through
    • Mounting Hole Quantity
      2
    • Why doesn't Sun anodize their aluminum bodies?
    • How big is a drop of hydraulic oil?  
    • Direct acting or pilot operated - what do I use?
      • Back to Top
    • Important: Carefully consider the maximum system pressure. The pressure rating of the manifold is dependent on the manifold material, with the port type/size a secondary consideration. Manifolds constructed of aluminum are not rated for pressures higher than 3000 psi (210 bar), regardless of the port type/size specified.
    • For detailed information regarding the cartridges contained in this assembly, click on the models codes shown in the Included Components tab.
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